package com.lyb;

import org.springframework.amqp.core.*;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

// RabbitMQ配置：生产者和消费者
@Configuration
public class RabbitmqConfig {

    // 交换机名字
    public static final String EXCHANGE_TOPICS_INFORM = "exchange_topics_inform";
    // 队列：邮箱
    public static final String QUEUE_INFORM_EMAIL = "queue_inform_email";
    // 队列：短信
    public static final String QUEUE_INFORM_SMS = "queue_inform_sms";

    // 生产者创建交换机
    // 在Spring中bean的名字
    @Bean(EXCHANGE_TOPICS_INFORM)
    public Exchange exchangeTopicsInform() {
        // durable(true)持久化，消息队列重启后交换机仍然存在
        return ExchangeBuilder.topicExchange(EXCHANGE_TOPICS_INFORM).durable(true).build();
    }

    // 消费创建队列

    // 声明队列
    @Bean(QUEUE_INFORM_SMS)
    public Queue queueInformSMS() {
        Queue queue = new Queue(QUEUE_INFORM_SMS,true);
        return queue;
    }

    // 声明队列
    @Bean(QUEUE_INFORM_EMAIL)
    public Queue queueInformEmail() {
        Queue queue = new Queue(QUEUE_INFORM_EMAIL,true);
        return queue;
    }

    // 消费者把队列绑定到交换机
    @Bean
    public Binding bindingQueueInformSMS() {
        return BindingBuilder.bind(queueInformSMS()).to(exchangeTopicsInform()).with("sms.*").noargs();
    }

    @Bean
    public Binding bindingQueueInformEmail(@Qualifier(QUEUE_INFORM_EMAIL) Queue queue,
                                              @Qualifier(EXCHANGE_TOPICS_INFORM) Exchange exchange) {
        return BindingBuilder.bind(queue).to(exchange).with("email.*").noargs();
    }
}
